-=O0~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~O0=-
"He took his vorpal sword in hand:
Long time the manxome foe he sought -
So rested he by the Tumtum tree.
And stood awhile in thought."
[L.Carrol "Jabberwacky"]
On Sun, 16 Dec 2001, Refael Ackermann wrote:
> I'm using mailgw.netvision.net.il, and Eudora as client.
> To be more specific about what I've figured as the needed header format:
> The header must contain a valid netvision address anywhere (including the
> "To" field).
> Theoreticly searching the acount names DB shouldn't be more complicated
> then searching the IP range.
i don't know which theory you are using:
let us roughly assume that the usernames are of the length
6 characters, and each can be a-z,_,-,0-9 which makes more than 30 letters;
to search all of them it is 20 in the power of 6.
afaik the addresses in IPv4 are in hex form of 0xFF.0xFF.0xFF.0xFF
to count all the IPs is 6 caracters of 16 letter aleph-beth.
it makes 16 in the power of 6.
so ...
which is bigger: 16^6 or more_than_30^6 ??
> And af far as being "spam freindly", it is, but it's allso useful for me as
> a legitimate user.
>
>
>
> At 09:43 16/12/2001, you wrote:
> >I do not think its likely that they check accounts on RCPT whenever an
> >incoming SMTP session is in progress - first, I don't think that sendmail
> >has that capability, and second, checking against the Netvision huge
> >database (which includes defunct as well as active acounts) is a huge
> >preformance hog, and I personally would have never designed such a system.
> >through which server do you relay ? I tried mailgw.netvision.net.il
> >
> >Oded
> >
> >--
> >"A Meltdown? One of those annoying buzzwords. We prefer to think of it as an
> >unrequested fission surplus!"
> > -- Montegue Burns, (The Simpsons)
> >
> >
> >----- Original Message -----
> >From: "Refael Ackermann" <[EMAIL PROTECTED]>
> >To: "Oded Arbel" <[EMAIL PROTECTED]>
> >Cc: <[EMAIL PROTECTED]>
> >Sent: Saturday, December 15, 2001 10:05 PM
> >Subject: Re: (OT) ISP's that don't allow relaying
> >
> >
> > > At 19:12 15/12/2001, you wrote:
> > > >Not as far as I know - I just tried to telnet to the Netvision mail gw
> >and
> > > >tried to send mail using a mail from address of an old netvision
> >account -
> > > >it reject my rcpt to command with a 'not relaying' error message. I'm
> > > >connection through actcom.
> > > >
> > > >AFAIK Netvision blocks by IP lists, and if you succeed in sending mail
> > > >through Netvision while connected to Internet Zahav, then I have to
> >conclude
> > > >that Netvision's IP lists are not accurate.
> > >
> > >
> > > I'm sure they block by address, since if I try to send with a different
> > > address in the replay-to, only then they block me.
> > > From what you've writen I geuss you have to have a live acount to do
> >relaying.
> > >
> > >
>
>
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